[Idea] Add Google Gemini support

[pratham-darooka]

Hello @FujiwaraChoki, it would be amazing to have Google Gemini model support!

Similar to the one I did in harry0703/MoneyPrinterTurbo#127

Thanks for this amazing project!

[FujiwaraChoki]

Open to PRs

[pratham-darooka]

@FujiwaraChoki can reopen this issue. Here is the PR: #78